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<a name="gcd_lcm"></a>Chapter 19. Integer Utilities (Greatest Common Divisor and Least Common Multiple)</h1></div></div></div>
<p>
    This code has now been moved to Boost.Integer, please see <a href="http://www.boost.org/doc/libs/release/libs/integer/doc/html/index.html" target="_top">here</a>.
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    Note that for the time being the headers <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">common_factor</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>,
    <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">common_factor_ct</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code> and
    <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">common_factor_rt</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code> will
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